DEVICES AND METHODS FOR GASTROINTESTINAL BYPASS
Devices and methods for gastrointestinal bypass are described. A gastrointestinal bypass device includes a gastrointestinal cuff and a gastrointestinal sleeve. The cuff may be configured to be attached in the esophagus, and may be sufficiently flexible to expand and collapse to conform with the inside of the esophagus to allow the esophagus to function substantially normally. The sleeve is configured to be coupled to the cuff, and may be made of a material that is floppy or flaccid but does not substantially expand radially.
1 . A gastrointestinal bypass device, comprising:
a gastrointestinal cuff configured to be at least partially positioned in an esophagus; and
a gastrointestinal sleeve coupled to the cuff, the sleeve configured to be at least partially positioned in a stomach and a small intestine;
wherein the cuff and the sleeve are configured to allow a bypassed portion of food to be bypassed past the stomach and into the small intestine, and wherein the cuff and/or the sleeve are configured to allow a nonbypassed portion of food to pass into the stomach.
2 . The device of claim 1 , wherein the cuff includes a liner configured to allow the nonbypassed portion of food to pass from an inside of the liner to an outside of the liner.
3 . The device of claim 2 , wherein the liner is at least partially made of a woven material having openings.
4 . The device of claim 2 , wherein the liner is at least partially made of a mesh material having openings.
5 . The device of claim 2 , wherein the liner includes one or more, or any combination of, openings, slits, holes, channels, valves, and/or flaps.
6 . The device of claim 1 , wherein the cuff includes a liner configured to allow an amount of the nonbypassed portion of food to be adjusted in situ.
7 . The device of claim 6 , wherein the liner includes one or more temporary or removable portions and/or layers.
8 . The device of claim 1 , wherein the cuff includes a liner having a proximal portion that allows the nonbypassed portion of food to pass into the stomach.
9 . The device of claim 8 , wherein the proximal portion of the liner includes a scalloped edge.
10 . The device of claim 9 , wherein the scalloped edge includes a plurality of peaks and valleys configured to allow the nonbypassed portion of food to pass through the valleys to an outside of the liner and into the stomach.
11 . The device of claim 1 , wherein the sleeve includes a tube configured to allow the nonbypassed portion of food to pass from an inside of the tube to an outside of the tube.
12 . The device of claim 11 , wherein the tube includes one or more, or any combination of, openings, slits, holes, channels, valves, and/or flaps.
13 . The device of claim 1 , wherein the sleeve includes a tube configured to allow an amount of the nonbypassed portion of food to be adjusted in situ.
14 . The device of claim 13 , wherein the tube includes one or more temporary or removable portions and/or layers.
15 . A method of providing adjustable gastric bypass, the method comprising:
positioning at least a portion of a gastrointestinal cuff in an esophagus;
positioning at least a portion of a gastrointestinal sleeve in a stomach and a small intestine, wherein the cuff and the sleeve are configured to allow a bypassed portion of food to be bypassed past the stomach and into the small intestine, and wherein the cuff and/or the sleeve are configured to allow a nonbypassed portion of food to pass into the stomach; and
adjusting an amount of the nonbypassed portion of food allowed to pass into the stomach.
16 . The method of claim 15 , wherein the cuff includes a liner, and wherein adjusting an amount includes removing one or more temporary or removable portions of the liner.
17 . The method of claim 15 , wherein the sleeve includes a tube, and wherein adjusting an amount includes removing one or more temporary or removable portions of the tube.